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  1. nola mike

    No fire

    Yeah, follow the troubleshooting guide before throwing more parts at it. https://forums.iboats.com/threads/how-mercruiser-thunderbolt-ignition-systems-work.676476/
  2. nola mike

    Alignment Tool

    What's sb? Those dimensions are correct, the others aren't.
  3. nola mike

    Alignment Tool

    Huh?
  4. nola mike

    1997 mercruiser 4.3 starts right up, runs for about 30 seconds, idles down and dies repeatedly. Oil gauge doesn't peg at all. No oil pressure alarm.

    Not quite. The oil pressure switch has nothing to do with the oil pressure sender (gauge).
  5. nola mike

    Can I install a newer outdrive?

    I couldn't find that serial number...what's the engine behind it? Otherwise you can either remove the top cover and count teeth (if there are any left) or count the number of input shaft rotations/prop rotations (again, not with a broken drive)
  6. nola mike

    Attwood guardian Bilge pump

    Yeah, so in an auto pump one wire is neg, one is switched 12v and one is direct wired 12v.
  7. nola mike

    Attwood guardian Bilge pump

    Every bilge pump I've seen just has 2 wires into it, esp a common brand like Attwood.
  8. nola mike

    Mercruiser thunderbolt IV ignition module

    Yes
  9. nola mike

    Gear ratio in lower ?

    The SEI drives are available in different gear ratios. If it's going behind a v-8 you're generally going to want a 1.5 or possibly a 1.65
  10. nola mike

    1988 4.3 ltr engine starter wiring

    No, solenoid can still be bad. It has 2 functions, first to engage Bendix and second to connect the battery voltage to the windings.
  11. nola mike

    1988 4.3 ltr engine starter wiring

    I think you're saying just power the field coil lug directly, but does it matter? If 12v is getting to the solenoid and the Bendix is engaging, then either the solenoid is bad or the motor is bad. Either way starter needs to come out unless I'm missing something.
  12. nola mike

    Mercury 3.0 EST no spark

    The exact idle mixture is determined by your carb, and your boat. Regardless, idle mix isn't affecting your running problems once you get going
  13. nola mike

    2003 25 hp merc 2 stroke impeller replacement

    Everything has been screwed with in there. I want to set everything up fresh--throttle/shift cables, idle, timing, fast idle, etc. Nothing works quite right. Mine doesn't appear to have the same timing link setup that some of the other engines have. Mine has an idle timing screw and a running...
  14. nola mike

    Vaccume gauge info

    Sounds good
  15. nola mike

    2003 25 hp merc 2 stroke impeller replacement

    Runs, and runs well. Used the gauge a couple of weeks ago on my 4.3 and it was 150 x 6. Like I said, cold engine. Maybe these 2 strokes are sloppier than the 4 strokes. I didn't really care since it was running well, but now my interest is piqued. Only reason I didn't retest was because I didn't...
  16. nola mike

    2003 25 hp merc 2 stroke impeller replacement

    Ok, got everything back together. I'm sad to say that the compression was 65 psi in both cylinders cold. Didn't do a wet test or retest after it was warm. I'm happy to say that it was running normally with those numbers. Top speed was 27-28 mph, which might be down a hair since I purchased the...
  17. nola mike

    Which way does a Mercruiser MIE 260 distributor spin?

    Had assumed this was an I/O until I saw his other thread...
  18. nola mike

    MerCruiser 3.0 TKS Overheating and activate alarm

    Apparently you installed an auto exhaust with a muffler...not sure where you're talking about the water exiting.
  19. nola mike

    Which way does a Mercruiser MIE 260 distributor spin?

    No, dizzy and motor both rotate the same way, CW
  20. nola mike

    2002 Mercruiser 350 Mag MPI showing high temp and engaging guardian system

    Is it not possible to wipe all codes from these ECMs, or are legacy codes forever available to see?
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